I may have missed something here regarding Kgo batteries...
I understand the difference between true 3.7V and regulated 3.7V. And I much prefer true 3.7V.
What is the Kgo?
It is my understanding that a Riva1100 or an ego battery comes off the charger at 3.7v and vapes at 3.4v. The KGO1100 comes off the charger at 4.2v and vapes at a true 3.7v until almost at it's recharge point. I'm not absolutely certain about regulated or unregulated circuitry. Someone will probably dial in with an answer to that part of your question.